a ball moves along a circle under the influence of centripetal force.what is the work done by the centripetal force on the ball

Dear Student,

Looking into a infinitesimal small displacement, the centripetal Force is directed perpendicular the displacement of the particle.


$W=\overrightarrow{F}\times \overrightarrow{S}=FS\cos 90 = 0$
Another overlook
Also around the entire circular motion, net displacement is zero thus Work done over the entire closed loop is again zero

Regards.